EP2243538A2 - Procédé de suppression de composants de gaz acides d'un mélange de gaz - Google Patents

Procédé de suppression de composants de gaz acides d'un mélange de gaz Download PDF

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Publication number
EP2243538A2
EP2243538A2 EP10160676A EP10160676A EP2243538A2 EP 2243538 A2 EP2243538 A2 EP 2243538A2 EP 10160676 A EP10160676 A EP 10160676A EP 10160676 A EP10160676 A EP 10160676A EP 2243538 A2 EP2243538 A2 EP 2243538A2
Authority
EP
European Patent Office
Prior art keywords
gas
absorption column
recycle
absorbent
gas mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10160676A
Other languages
German (de)
English (en)
Other versions
EP2243538A3 (fr
Inventor
Johannes Menzel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uhde GmbH filed Critical Uhde GmbH
Publication of EP2243538A2 publication Critical patent/EP2243538A2/fr
Publication of EP2243538A3 publication Critical patent/EP2243538A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1406—Multiple stage absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1425—Regeneration of liquid absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1462—Removing mixtures of hydrogen sulfide and carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/102—Removal of contaminants of acid contaminants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/24—Hydrocarbons
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

Definitions

  • the invention relates to a method for the removal of acidic gas components, in particular hydrogen sulfide and carbon dioxide, from a gas mixture, wherein a physically acting absorbent is brought into direct contact in a first absorption column with the pressurized gas mixture and thereby the acidic gas components at least partially and additionally receives a portion of a useful gas contained in the gas mixture, wherein the loaded absorbent is subsequently withdrawn from the first absorption column and fed to recover the Nutzgas a recycle flash container in which the loaded absorbent is expanded and thereby a Recyclegas containing Nutzgas and acidic gas components , is formed and wherein the recycle gas is compacted for further use.
  • acidic gas components in particular hydrogen sulfide and carbon dioxide
  • the synthetic or natural gas mixture may contain, for example, hydrocarbon compounds as the useful gas and hydrogen sulfide, organic sulfur compounds and / or carbon dioxide as acidic gas components.
  • a gas mixture such as natural gas.
  • chemically acting absorbents and physically acting absorbents such as polypropylene carbonate, methanol, N-methyl-pyrrolidone, N-formylmorpholine, N-acetylmorpholine and mixtures of these substances are used.
  • Suitable absorbents are known, for example, under the brand names Selexol®, Pursiol®, Genosorb® and Morphysorb®.
  • the invention has for its object to provide a method which allows for a low use of a physically acting absorbent efficient removal of acidic gas components from a gas mixture.
  • the object is achieved in that the withdrawn from the first absorption column, loaded absorbent is divided into a first and a second partial flow, wherein the first partial flow immediately and the second partial flow after passing through a second Absorption column are fed to the recycle flash tank, that in the recycle flash tank formed and compressed recycle gas is supplied to the second absorption column, in which it is brought into direct contact with the guided through the second absorption column second partial stream and that subsequently in the second absorption column at least partially purified recycle gas is recycled to the gas mixture.
  • the proportion of the discharged second partial stream amounts to up to one third of the total amount of the absorbent.
  • the invention is in particular based on the finding that the highly enriched absorbent coming from the first absorption column can still be used to some extent for the removal of acidic gas components from the recycle gas when the recycle gas formed in the recycle flash container is first compressed and then pressurized is brought into direct contact with the already loaded absorbent.
  • the contact takes place in the second absorption column expediently in countercurrent.
  • the second partial stream can be guided, for example, by means of a pump to the top of the second absorption column.
  • the absorption capacity of the absorbent depends in particular on the prevailing pressure.
  • the pressure there is usually between 10 bar and 150 bar, preferably above 50 bar, more preferably above 70 bar.
  • the pressure there is usually between 10 bar and 150 bar, preferably above 50 bar, more preferably above 70 bar.
  • the pressure In the recycle flash container, a relaxation of the loaded absorbent occurs, whereby the flash gas is formed. It is to choose a pressure below the operating pressure of the first absorption column, in which a large proportion of useful gas but only the smallest possible proportion of the acidic gas components is released.
  • the formed flash gas is compressed for at least partial purification in the second absorption column.
  • the withdrawn from the second absorption column, partially purified from the acidic gas components Recyclegas a sump of the first absorption column is fed, the recycle then passed with the flow of the gas mixture through the absorption column and for further purification with the absorbent in a direct contact is brought.
  • the recycle gas withdrawn from the second absorption column is fed to the gas stream of the gas mixture after it has left the first absorption column.
  • the described second development is particularly advantageous if only a portion of the acidic gas components to be removed from the gas mixture and the incomplete purification of Recyclegases can be accepted. Since the recycle gas is not passed through the first absorption column and a part of the acidic gas components in the second absorption column is removed, the cleaning capacity thus unnecessary in the first absorption column can be used to increase the flow rate of the gas mixture through the first absorption column.
  • the inventive method can therefore be used to increase the total capacity of an existing sour gas absorption system, without a change of the existing absorbent cycle is required.
  • first and the second development in such a way that the recycle gas withdrawn from the second absorption column is fed by suitable control means either to the bottom of the first absorption column or after the first absorption column to the flow of the gas mixture.
  • suitable control means either to the bottom of the first absorption column or after the first absorption column to the flow of the gas mixture.
  • a variable distribution of the recycle gas withdrawn from the second absorption column can also take place.
  • Such an embodiment can be used to achieve specified default values for different boundary conditions and / or to be able to react to different inflow quantities of the gas mixture.
  • the absorbent After leaving the recycle flash tank, the absorbent is regenerated in a known manner with the absorbent absorbed by the absorbent acidic gas components are removed, for example by further relaxation and / or by heating and wherein the regenerated absorbent is recycled in a circuit to the first absorption column.
  • the invention will be explained below with reference to an illustrative only one embodiment drawing.
  • the single figure shows schematically a device for carrying out the method according to the invention.
  • a gas mixture containing a useful gas and acidic gas components is fed via a feed line 1 to a sump 2 of a first absorption column 3 and brought into direct contact with a fresh, regenerated physically acting absorbent in the first absorption column 3, which is supplied via a line of an absorption medium circuit 4 in a head region 5 of the first absorption column 3.
  • the absorbent absorbs the acidic gas components at least partially and additionally also a portion of the useful gas.
  • a recycle flash container 6 In order to recover the absorbed by the absorbent Nutzgas, a recycle flash container 6 is provided.
  • the loaded absorbent withdrawn from the first absorption column 3 is divided into a first and a second partial flow before it enters the recycle flash container 6.
  • the first partial flow is fed directly to the recycle flash tank 6 and depressurized, whereby recycle gas is formed, which contains useful gas and acidic gas components.
  • the second partial stream is conducted by means of a pump 7 to a second absorption column 8.
  • the second partial stream of the loaded absorbent flows through the second absorption column 8 and leaves it via a sump 2 '.
  • the second partial flow subsequently passes via a connecting line 9 in the recycle flash container 6 and is there relaxed with additional formation of recycle gas.
  • the recycle gas formed in the recycle bottle container 6 is compressed by a compressor 10 and fed to the second absorption column 8, which flows through it in countercurrent to the second partial stream of the loaded absorbent, wherein by the direct contact and the prevailing pressure in the second absorption column 8 a Part of the acid gas components contained in the recycle gas is taken up by the second partial stream of the absorbent.
  • the at least partially freed of the acidic gas components in the second absorption column 8 recycle gas is fed via a return line 11 either the sump 2 of the first absorption column 3 or the flow of the gas mixture after leaving the first absorption column 3.
  • valves 12 may be provided as control means to divide the flow in the return line 11.
  • the absorbent collected in the recycle flash container 6 is worked up in a regeneration device 13 known per se and only indicated in the single FIGURE and freed from the acidic gas components before it is fed again to the first absorption column 3 via the absorption medium circuit 4.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Gas Separation By Absorption (AREA)
EP10160676A 2009-04-22 2010-04-22 Procédé de suppression de composants de gaz acides d'un mélange de gaz Withdrawn EP2243538A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009018444A DE102009018444A1 (de) 2009-04-22 2009-04-22 Verfahren zur Entfernung von sauren Gaskomponenten aus einem Gasgemisch

Publications (2)

Publication Number Publication Date
EP2243538A2 true EP2243538A2 (fr) 2010-10-27
EP2243538A3 EP2243538A3 (fr) 2011-05-25

Family

ID=42358681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10160676A Withdrawn EP2243538A3 (fr) 2009-04-22 2010-04-22 Procédé de suppression de composants de gaz acides d'un mélange de gaz

Country Status (4)

Country Link
US (1) US8303684B2 (fr)
EP (1) EP2243538A3 (fr)
CA (1) CA2701270A1 (fr)
DE (1) DE102009018444A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017162351A1 (fr) * 2016-03-23 2017-09-28 Siemens Aktiengesellschaft Procédé de traitement d'un flux de gaz

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102424768A (zh) * 2011-10-10 2012-04-25 胜利油田胜利勘察设计研究院有限公司 一种脱除天然气中酸性气体的脱除反应器
CN114682052B (zh) * 2022-03-17 2024-04-19 廖明昆 一种1，4-丁二醇装置中乙炔驰放气的回收减碳系统及方法

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE19945326A1 (de) 1999-01-22 2000-08-10 Krupp Uhde Gmbh Verfahren zur Entfernung von Kohlendioxid, Schwefelverbindungen, Wasser und aromatischen und höheren aliphatischen Kohlenwasserstoffen aus technischen Gasen
DE10313438A1 (de) 2003-03-26 2004-11-04 Uhde Gmbh Verfahren zur selektiven Entfernung von Schwefelwasserstoff und CO2 aus Rohgas

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DE2262457A1 (de) * 1972-12-20 1974-06-27 Linde Ag Verfahren und vorrichtung zum auswaschen von kohlendioxid, schwefelwasserstoff und gegebenenfalls kohlenoxisulfid
US4254094A (en) * 1979-03-19 1981-03-03 Air Products And Chemicals, Inc. Process for producing hydrogen from synthesis gas containing COS
US4397660A (en) * 1981-06-15 1983-08-09 Shell Oil Company Process for the removal of H2 S and CO2 from a gas mixture
DE3247773A1 (de) * 1982-12-23 1984-06-28 Linde Ag, 6200 Wiesbaden Verfahren zum entfernen saurer bestandteile aus co(pfeil abwaerts)2(pfeil abwaerts)-reichem, kohlenwasserstoffhaltigem rohgas
DE3922785C2 (de) * 1989-07-11 1994-03-31 Metallgesellschaft Ag Verfahren zum Regenerieren einer hochsiedenden, CO¶2¶ und H¶2¶S enthaltenden Waschlösung
DE4121436A1 (de) * 1991-06-28 1993-01-07 Linde Ag Verfahren zur selektiven h(pfeil abwaerts)2(pfeil abwaerts)s-auswaschung
FR2771022B1 (fr) * 1997-11-19 1999-12-17 Inst Francais Du Petrole Procede de desacidification d'un gaz a tres forte teneur en gaz acides
DE19753903C2 (de) * 1997-12-05 2002-04-25 Krupp Uhde Gmbh Verfahren zur Entfernung von CO¶2¶ und Schwefelverbindungen aus technischen Gasen, insbesondere aus Erdgas und Roh-Synthesegas
EP1022046A1 (fr) * 1999-01-22 2000-07-26 Krupp Uhde GmbH Procédé pour élimination de dioxide de carbone, des composés soufrés, l'eau et des hydrocarbures aromatiques et aliphatiques supérieures de gaz techniques
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CA2405719A1 (fr) * 2002-09-27 2004-03-27 Gary Palmer Methode d'enrichissement de gaz acides
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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945326A1 (de) 1999-01-22 2000-08-10 Krupp Uhde Gmbh Verfahren zur Entfernung von Kohlendioxid, Schwefelverbindungen, Wasser und aromatischen und höheren aliphatischen Kohlenwasserstoffen aus technischen Gasen
DE10313438A1 (de) 2003-03-26 2004-11-04 Uhde Gmbh Verfahren zur selektiven Entfernung von Schwefelwasserstoff und CO2 aus Rohgas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017162351A1 (fr) * 2016-03-23 2017-09-28 Siemens Aktiengesellschaft Procédé de traitement d'un flux de gaz

Also Published As

Publication number Publication date
DE102009018444A1 (de) 2010-10-28
US20100269693A1 (en) 2010-10-28
US8303684B2 (en) 2012-11-06
CA2701270A1 (fr) 2010-10-22
EP2243538A3 (fr) 2011-05-25

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